Speed-gearing.



A. P. WEIGEL. SPEED GEARING. APPLIOATION I'ILED 00118, 1913.

1,101,597. Patented June 30,1914

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UNTTED STATES PATENT OFEQE.

ALBERT P. WEIGEL, OF KOKOMO, INDIANA, ASSIGNOR TO KOKOMO NAIL AND BBADCOMPANY, OF KOKOMO, INDIANA, A CORPORATION OF INDIANA.

SPEED-GEARING.

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Application filed October 18, 1913.

To all whom it may concern Be it known that I, ALBERT P. VVEIGEL, acitizen of the United States, residing at Kokomo, in the county ofHoward and State of Indiana, have invented a certain new and usefulImprovement in Speed- Gearing, of which the following is a full, clear,and exact description.

This invention is an improved alwaysin-mesh change speed gearing. In theform shown it is especially designed for use on some form of machinetool for causing the tool carrying sp-indle to rotate at any of fourdifferent speeds without varying the speed of the driving shaft. But theinvention either in the form shown, or slightly modified as to details,is adapted for a variety of specifically different uses.

The objects of the invention are to provide change speed gearing whichshall occupy less space, but which shall nevertheless be stronger thanchange speed gearing of like capacity, as heretofore constructed.

The distinction between my gearing and the old gearing which most nearlyresembles it is this, viz that in the old gearing, a clutch sleeve whichwas compelled to rotate with the shaft but was movable lengthwisethereon, was interposed between two gears which had no movementlengthwise of the shaft, and which were rotatable independently of theshaft, in order that by the movement of the clutch sleeve in onedirection or the other either gear could be connected at will with saidshaft; whereas in my construction the intermediate clutch member isimmovably fixed to the shaft, while two gears located on opposite sidesthereof are associated with the mechanism for moving them simultaneouslyalong the shaft in either direction, and thereby causing either to beclutched to the intermediate sleeve and thereby to the shaft. j

In the old construction it is necessary to provide either the shaft orthe clutch .sleeve with a fairly long groove or tongue and to providethe other part with a tongue or groove for engagement therewith, wherebythe lengthwise movement of the sleeve on the shaft was pernissiblewithout breaking the operative driving engagement between the shaft andsleeve. Tn this construction, however, the tongue in any practicalconstruction could not be very thick, and it could not project out veryfar from the part Specifieation of Letters Patent.

Patented June 30, 1914.

Seral No. 796,052.

which carried it. Its strength was therefore limited so that it wasfrequently sheared off a by the strains to which the load subjected it.Moi-cover the clutch sleeve had to be long enough for an annular grooveor its equivalent to be enga ged by t-he sleeve moving intrumentality.With my new construction, however, the clutch sleeve is immovablelengthwise of the shaft, and therefore may be shortened because it neednot be provided with a circumferential groove or its equivalent.Likewise in my construction a tongue and groove driving connectionbetween the sleeve and shaft are not required. The sleeve may be fittedonto a square part of the shaft and may be securely pinned thereto. Thisform of driving connection between a clutch sleeve and a shaft can neverbe broken, and thereby it can transmit heavier loads than can betransmittedby any practical tongue and groove connection.

In the drawing Figure 1 is a sectional view of the invention, and Fig. 2is a sec- `tional view through one side of the gear case in. the planeindicated by line 2-2 on Fig. 1.

Referring to the parts by letters, A represents the driving shaft. Brepresents an intermediate shaft and C the driven shaft. On a squaredpart a of shaft A the clutch sleeve or collar D is fitted and secured bythe pin (Z. Gears E and F are loosely mounted on said shaft A onopposite sides of said clutch collar. Clutch jaws (F, are formed onopposite ends of the clutch collar; and other clutch jaws e and f areformed on the hubs of the two gears E and F respectivelv in position tointerlock with the jaws (F on the clutch Collar D.

Gears H and J are keyed fast to the shaft B. Gears M and N are mountedloosely on shaft C; and between them the Collar D is secured to saidshaft C just as collar D is secured to shaft A. Collar D is formed withclutch j aws d on opposite ends for engagement with the clutch jaws m,a, on the hubs of the gears M and N. Gears E and M are in mesh with theintermediate gear H, which latter gear is wide enough to preserve thatengagement, notwithstanding the 5 movement lengthwise of the shafts ofthe two gears E and M. The gears F and N are likewise in mesh with theinternediate gear J which is wide enough to preserve this engag'ement asthe gear N are moved. Gears and F are of difierent diameters, and soalso are gears M and N.

Adjacent to the gears E and F is an endwise movable sliding rod Kcarrying two forked j aws is, 79 which respectively engage the gears Eand F, the forks of each jaw lying in substantal engagement on oppositesides of the associated gear. A Similar rock bar K is mounted adjacentto gears M and N and carries :torked jaws la, 74 which engage the sidesof said gears. Each of these bars K, K in the form shown is a rack bar,and with each rack bar a pinion g engages. These two pinions g, g, aresecured respectively to two shafts Q Q), which are mounted in bearingsin the gear case and have operating arms Q2 secured to their projectingouter ends. By rocking the upper shaft Q the rack bar K will be moved,and so will both gears E and F. If moved in one direction, gear E willbe clutched to the shaft, and gear F will remain unclutched from theshaft. By moving it in the opposite direction the reverse of conditionswill be brought about. By similar movements of the other rack bar eithergear M or N will be moved to cause its jaws to interlock with theassociated jaws on the clutch sleeve. It is Obvious that the two pairsof gears may be so moved that either gear of one pair may be connectedwith its shaft, while either gear of the other pair is connected withits shaft; and thus the driving shaft C may be driven at any of 'fourdifferent speeds without changing the speed of the driving shaft A.

Having described my invention, I Claim:

1. In speed gearing, the combination of three shafts, two gears ofdifferent diameters fixed to the intermediate shaft, a clutch memberrigidly fixed to one of the other shafts, two gears which are slidablyand rotatably mounted on the last named shaft on opposite sides of andadjacent to said clutch member, each of said gears being provided withclutching devices, a gear shifter engaging both of said sliding gearsfor simuitaneously moving them, the one into and the other out ofengagement with said clutch member, and a gear connection between theintermediate shaft and the third shaft referred to.

2. In speed gearing, the combinaton of three shaits, two gears ofdifferent diameters fixed to the intermediate shaft, a clutch memberimmovabiy fixed to each of ,the other two shafts, a pair of gearsslidably and rotatably mounted on each of the other two shafts and onopposite sides of the clutch member thereon, each of said sliding gearsbeing provided with clutch devices for engaging the adjacent clutchmember, and said sliding gears being permanently in mesh with gears onthe intermediate shaft, two gear shifters, one engaging both slidinggears on one shaft, and the other engaging both sliding gears on theother shaft, whereby either pair of gears may be moved independently ofthe other pair, and the two gears of each pair will be movedsimultaneously to cause one to engage and the other to disengage theintermediate clutch member. V

3. In speed gearing` the combination of three shafts, two wde gears ofdifferent diameters fixed to the intermediate shaft, two narrow gears ofdiflerent dameters which are slidably and rotatably mounted on one ofthe other shafts and meshing respectively with the two gears on theintermediate shaft, each' of said two sliding gears being provided withclutching devices, a ciutch member fiXed to said shaft between the twosliding gears thereon, two other narrower gears of difi'erent diameterswhich are slidably and rotatably mounted on the third shaft -in meshrespectively with the two gears on the intermediate shaft, each of thelast two named sliding gears being provided with clutch devices, aclutch member rigidly fixed to the third shaft between the two slidinggears thereon, a gear case in which the said shafts are mounted and inwhich the gears referred to are inclosed, a gear shifter in said gearcase engaging both of the sliding gears mounted on one of said shafts,means operable from outside the gear case for moving said gear shifter,a second gear shifter in the gear case engaging the two sliding gears onthe other shaft, and means operable from outside the gear case formoving the last named gear shifter.

In testimony whereof, I hereunto aflix my signature in the presence oftwo witnesses.

ALBERT P. XVEIGEL. Witnesses:

I. N. HAIR, DON M. OsBoRNE,

Copes of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C."

